Congressional Republicans are hoping to pass a temporary funding bill that would keep the government open until mid-February, thus allowing negotiations to continue on immigration and other matters. To attract more support for the stop-gap bill, Republican leaders have proposed combining it with other unrelated and more popular provisions, including a two-year delay of the so-called “Cadillac tax.” Delaying the “Cadillac tax” again — it was already pushed back once — is a bad idea. It would set back the cause of market-driven health care rather than advance it.